CN207028845U - Working truck - Google Patents
Working truck Download PDFInfo
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- CN207028845U CN207028845U CN201720615592.7U CN201720615592U CN207028845U CN 207028845 U CN207028845 U CN 207028845U CN 201720615592 U CN201720615592 U CN 201720615592U CN 207028845 U CN207028845 U CN 207028845U
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- suction filter
- gear
- filter
- gearbox
- speed
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- 239000010720 hydraulic oil Substances 0.000 claims abstract description 12
- 239000003921 oil Substances 0.000 claims description 29
- 230000002633 protecting effect Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 45
- 230000007246 mechanism Effects 0.000 description 32
- 230000008859 change Effects 0.000 description 21
- 239000002184 metal Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000000916 dilatatory effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000036413 temperature sense Effects 0.000 description 1
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- General Details Of Gearings (AREA)
- Arrangement Of Transmissions (AREA)
Abstract
A kind of working truck is the utility model is related to, it includes：Gearbox (12)；Trailing wheel (3)；Suction filter (71,71), its be removably disposed on the side surface of gearbox (12) and with trailing wheel (3) relatively, for filter from gearbox (12) flow into hydraulic oil；And protection component (79,80), it is used to prevent the lower surface of suction filter (71,71) from colliding with four scattered objects；Wherein the outward flange of component (79,80) is protected to be short so that the end that can not cover suction filter (71,71) enough.When suction filter is arranged on the side of gearbox, its bottom is protected from the influence of the dirt and muddy water dissipated from farmland surface four.
Description
Technical field
A kind of working truck, such as farm tractor are the utility model is related to, is more particularly, to arranged on hydraulic means
Hydraulic circuit centre suction filter protection structure.
Background technology
Farm tractor as the example of working truck is provided with the change for descending operation work machine and vehicle
To/the hydraulic means that turns to, the hydraulic operation liquid of the hydraulic means is filled in gearbox and in response to the driving of hydraulic pump
Valve and oil cylinder mechanism are supplied to by pipe fitting.In the presence of the known structure for including such suction filter, suction filter is routinely
In pipe fitting and its bottom is arranged on to be covered by strainer cover to prevent the dirt and muddy water that dissipate from farmland surface four, wherein
Pipe fitting sets the side (patent document 1) along the longitudinal direction of trailing wheel internal speed-changing case.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Application publication number：2011-105134
Utility model content
The oil filter of patent document 1 includes：Filter mounting, it is fixed by bolts to the axle for being rotatably mounted hind axle
Before case, in the side wall of gearbox；And oil cylinder filter member, its be screwed on the screw member of filter mounting and
Flatly install, and in the case of the plugged filter of filter member or when changing, by filter member from filtering
Take out to change filter in device support, then install back on filter mounting.Strainer cover is included after being formed by thick flat board
Lid and the protecgulum formed by thin flat plate.
Therefore, if installing more than two suction filters for the capacity of raising, the huge structure of filter mounting,
And the front and rear covers due to setting and the lot of materials for protecting two suction filters be arrangeding in parallel, therefore cost increase.
In view of these problems of traditional work vehicle, the purpose of this utility model is by improving protection component and parallel
The setting of the suction filter of setting and structure solve the problem.
In order to solve foregoing problems, the utility model provides following technological means：
The utility model provides a kind of working truck, and in first scheme, it includes：Gearbox；Trailing wheel；Suction filter, its
It is removably disposed hydraulic oil on the side surface of gearbox and relative with trailing wheel, to be flowed into for filtering from gearbox；With
And protection component, it is used to prevent the lower surface of suction filter from colliding with four scattered objects；Wherein protect the outward flange of component enough
It is short so that the end for not covering suction filter.
In alternative plan, working truck is the working truck of above-mentioned first scheme, wherein protection component is protection board；Extremely
Few two suction filters are disposed adjacent to each other；And the protection board of the lower surface for the suction filter be arrangeding in parallel is covered between suction filter
Gap below be provided with rectangular aperture or otch.
In third program, working truck is the working truck of above-mentioned first scheme, wherein protection component is provided in suction
The shaft-like protect-ing frame structure of the central lower of filter.
In fourth program, the working truck of any of the above-described scheme can also include：Be arranged on the side surface of gearbox,
Intake line accessory and gear pump before suction filter；And it is arranged on the oil temperature sensor on intake line accessory；Its
In, the oil stream filtered due to driving gear pump by suction filter crosses intake line accessory and as hydraulic control oil.
The advantageous effects of device
According to the working truck of first scheme of the present utility model, because the side of suction filter and lower surface are respectively by rear
The protection of wheel and protection component, therefore prevent the collision with other objects and the destruction caused by four scattered objects.
In addition, the outward flange of protection component is short so that the end that can not cover suction filter enough, and suction filter is outer
Edge formed on the position of machine body side is returned to, while the band of filter spanner the position retract in length b around
On the periphery of the end of suction filter, so that the bar that must be used to ordinatedly operate the band can be in the situation of not interference protection component
Under operated with circular motion, and attachment/dismounting of suction filter is easy.
According to the working truck of alternative plan, in addition to the advantageous effects of the working truck of first scheme, protection board exists
Rectangular aperture or otch are provided with below gap between the suction filter be arrangeding in parallel, therefore is open and reduces the poly- of dirt with otch
Collection.
According to the working truck of third program, in addition to the advantageous effects of the working truck of third program, the structure is used
In reduce because of four scattered dirts and with the collisions of other objects caused by destruction, and compared with the structure of protection board, cost
It is lowered with weight, while its manufacture is easy.
According to the working truck of fourth program, except such scheme one to any one of scheme three working truck it is favourable
Outside effect, the temperature of hydraulic control oil is desirably detected.
Brief description of the drawings
Fig. 1 shows the side view of tractor.
Fig. 2 shows the schematic diagram of the transmission mechanism of the speed change gear of tractor.
Fig. 3：Fig. 3 (A) shows the sectional view of the transmission mechanism of the driving system of the speed change gear of tractor；Fig. 3 (B) shows
The sectional view of the transmission mechanism of power output (PTO) system of the speed change gear of tractor is gone out.
Fig. 4：Fig. 4 (A) shows the cross section view of the speed change system of gear pump；Fig. 4 (B) is shown around metal part
Side view；Fig. 4 (C) shows the rearview of the gear pump of metal part and installation.
Fig. 5 shows the partial side elevation view of the gearbox for the tractor that the left side in the width direction is seen.
Fig. 6 shows the partial side elevation view of the gearbox for the tractor that the right in the width direction is seen.
Fig. 7 shows the partial side elevation view of the front gear box for the tractor that the left side in the width direction is seen.
Fig. 8 shows the decomposition view of the gearbox of tractor, suction filter and gear pump.
Fig. 9 shows the side view of the expansion of suction filter installation site.
Figure 10 shows the partial bottom view of the gearbox from the tractor in terms of bottom.
Figure 11 shows the cross sectional side view of the oil temperature sensor in block portion.
Figure 12：Figure 12 (A) shows the stereogram of the modified example of protection component；Figure 12 (B) shows its upward view.
Figure 13 shows the stereogram of another example of protection component.
Figure 14：Figure 14 (A) shows the stereogram of another example of protection component；Figure 14 (B) shows its upward view.
Figure 15 shows the stereogram of another example of protection component.
Reference numerals list
3- trailing wheels；12- gearboxes；70- gear pumps；71- suction filters；76- intake line accessories；79- protection boards (protection structure
Part)；80- protect-ing frame structure (protection component)；85- oil temperature sensors.
Embodiment
Now, it will be explained in more detail with reference to the drawing embodiment of the present utility model.
Pay attention to, in the following description, fore-and-aft direction refers to the fore-and-aft direction of tractor 1.More specifically, fore-and-aft direction is
The straight trip direction of tractor 1, the front of the direction is referred to as the front of fore-and-aft direction, and the rear of the direction is referred to as fore-and-aft direction
Rear.In addition, width is horizontal vertical in the direction of fore-and-aft direction.Here, it is right when facing the front of fore-and-aft direction
Side is referred to as the right of width, and left side is referred to as the left side of width.
As shown in figure 1, the working truck as present embodiment, tractor 1 is the working truck of such as farm tractor,
The farm tractor performs operation while by power automatic running caused by power source in farmland.Tractor 1 includes：
Front-wheel 2；Trailing wheel 3；Engine 4 as power source；And speed change gear (transmission device) 5.Wherein, front-wheel 2 is arranged to main
For the wheel of steering, i.e. deflecting roller.Trailing wheel 3 is arranged to be mainly used in the wheel of driving, i.e. driving wheel.By installed in machine body
Before cover 6 in engine 4 caused by rotary power speed suitably reduced by speed change gear (transmission device) 5 after,
The rotary power is delivered to trailing wheel 3, and trailing wheel 3 produces driving force by the rotary power.If desired, speed change gear 5
Rotary power caused by engine 4 is also passed into front-wheel 2, in this case, front-wheel 2 and trailing wheel 3 are completely used as driving wheel,
And produce driving force.More specifically, speed change gear 5 switches two-wheel drive and four-wheel drive, the rotary power of engine 4 is reduced,
And the rotary power of deceleration is passed into front-wheel 2 and trailing wheel 3.Tractor 1 also includes being used to install behind machine body
The attachment means 7 of work machine (such as rotating the machine of operation, be not shown).
Tractor 1 includes：The seat 8 of operator；Instrument board 10 before the seat 8 of operator；Hung down from instrument board 10
The steering wheel 11 directly set；And it is arranged on operating pedal and action bars around the seat 8 of operator, wherein operating pedal bag
Clutch pedal, brake pedal and accelerator pedal are included, action bars includes forward-reverse bar and shift bar.
Fig. 2 shows the schematic diagram of the transmission mechanism in the gearbox 12 of speed change gear 5.Speed change gear 5 includes speed change
Case 12 (referring to Fig. 3 and Fig. 4) and transmission mechanism 13, the transmission mechanism 13 are arranged in gearbox 12, for by engine 4
Rotary power passes to trailing wheel 3 etc..The rotary power of engine 4 is passed to front-wheel 2, trailing wheel 3 and is arranged on by transmission mechanism 13
Work machine on machine body, and drive them by the rotary power of engine 4.
Specifically, transmission mechanism 13 includes：Input shaft 14；Forward-reverse switching mechanism 15；As high/low gear
Hi-Lo gears 16；Main speed-changing mechanism 17；Auxiliary transmission mechanism 18；2WD/4WD switching mechanisms 19；And PTO drive mechanisms
20。
Input shaft 14 is connected to the output shaft of engine 4 and inputs the rotary power of engine 4.
Forward-reverse switching mechanism 15 includes pace gear 15a, astern speed gear 15b, counter gear counterclockwise
The 15c and advance hydraulic pressure multiplate clutch C1 of hydraulic pressure multiplate clutch structure and retrogressing hydraulic pressure multiplate clutch C2, and work as
When advance hydraulic pressure multiplate clutch C1 is engaged and retreated hydraulic pressure multiplate clutch C2 releases, the rotation for passing to input shaft 14 is moved
Power is delivered to the reversing shaft 21 rotated in direction of advance by pace gear 15a and advance hydraulic pressure multiplate clutch C1.
When currently entering hydraulic pressure multiplate clutch C1 releases and retreating hydraulic pressure multiplate clutch C2 engagements, the rotation of input shaft 14 is passed to
Power is passed in retrogressing side by astern speed gear 15b, counter gear 15c counterclockwise and retrogressing hydraulic pressure multiplate clutch C2
To the reversing shaft 21 of rotation.
Forward-reverse switching mechanism 15 also serves as main clutch, and passes through forward/backward hydraulic pressure multiplate clutch C1, C2
The release of the two provides neutral state (neutral state), gives the power of front-wheel 2 and trailing wheel 3 transmission quilt in this condition
Disconnect.Operator can switch advance, retrogressing and neutral state by the unshowned forward-reverse changer lever of hydraulic operation.
Forward/backward hydraulic pressure multiplate clutch C1, C2 are released by depressing clutch pedal.
Hi-Lo gears 16 include Hi (high speed) gear 16a, Lo (low speed) gears 16b, hydraulic pressure multi-disc from
Clutch (Hi (high speed) clutch) C3 and hydraulic pressure multiplate clutch (Lo (low speed) clutch) C4, and in hydraulic pressure multiplate clutch
When C3 is engaged and hydraulic pressure multiplate clutch C4 is released, it is changed in the speed for the rotary power for passing to reversing shaft 21
Afterwards, the rotary power passes to variable-speed shaft 22 by hydraulic pressure multiplate clutch C3 and Hi gear 16a.When hydraulic pressure multi-disc clutch
When device C3 is released and hydraulic pressure multiplate clutch C4 is engaged, it is changed in the speed for the rotary power for passing to reversing shaft 21
Afterwards, the rotary power is passed to variable-speed shaft 22 by hydraulic pressure multiplate clutch C4 and Lo gear 16b.For example, pass through behaviour
Author turns on/off unshowned Hi-Lo switches (high/low varying speed switch) and is carrying out hydraulic cutting between two kinds of speed of low speed at a high speed
Change Hi (high speed) and Lo (low speed).
Main speed-changing mechanism 17 includes multiple speed：First Speed 17a, second speed 17b, third speed 17c, fourth speed
17d, the 5th speed 17e and the 6th speed 17f, one of speed for example by operator operate main shift bar (not shown) come
Selection and change, and speed converts between First Speed 17a to the 6th speed 17f this 6 speed.
Auxiliary transmission mechanism 18 includes the first auxiliary drive 24 and the second auxiliary drive 25 etc., and is transmitting
After speed to the rotary power of variable-speed shaft 23 is changed, the rotary power is auxiliary by the first auxiliary drive 24, second
Transmission device 25 etc. is helped to pass to variable-speed shaft 26.First auxiliary drive 24 changes into the speed of rotary power at a high speed or low
Speed, and the trailing wheel 3 as driving wheel is passed to, wherein rotary power is transmitted to from engine 4 and its speed passes through master
The grade of gear 17 changes.The speed of rotary power is adapted to below the first auxiliary drive by the second auxiliary drive 25
The extremely low speed of 24 speed provided, and passes to the trailing wheel 3 as driving wheel, wherein rotary power transmit from engine 4 and
Come and its speed is changed by the grade of main speed-changing mechanism 17.Pay attention to, when needing simple structure, it is convenient to omit the second auxiliary passes
Dynamic device 25.
The transmission mechanism 13 of speed change gear 5 will be passed to the rotary power of variable-speed shaft 26 by trailing wheel differential gear 27, after
Axle 28, planetary gear reducing mechanism 29 for deceleration etc. pass to trailing wheel 3.As a result, the trailing wheel 3 of tractor 1 is used as driving wheel
Driven by the rotary power of engine 4.
2WD/4WD switching mechanisms 19 include power transmission shaft 19a, Hi (high speed) gear 19b, Lo (low speed) gear
19c, hydraulic pressure multiplate clutch (Lo (low speed) clutch) C6, hydraulic pressure multiplate clutch (Hi (high speed) clutch) C7 and transmission
Axle 19d, and engaging/disengaging in response to hydraulic pressure multiplate clutch C6, C7, the rotary power for passing to transmission shaft 19a pass through
Different bang paths passes to power transmission shaft 19d.When hydraulic pressure multiplate clutch C6 engagements and hydraulic pressure multiplate clutch C7 unclamps
When, after passing to the power transmission shaft 19a speed of rotary power and being changed, 2WD/4WD switching mechanisms 19 lead to the rotary power
Cross Lo gears 19c and hydraulic pressure multiplate clutch C6 passes to power transmission shaft 19d.Pay attention to, the rotation transmitted from variable-speed shaft 26 is moved
Power passes to (input) power transmission shaft 19a by gear 30, gear 31, power transmission shaft 32, shaft coupling 33 etc..
The transmission mechanism 13 of speed change gear 5 will be passed to power transmission shaft 19d rotary power and pass through front-wheel differential gear 34, preceding
Axle 35, vertical axis 36, planetary gear reducing mechanism 37 etc. pass to front-wheel 2.
PTO drive mechanisms 20 include PTO clutch mechanisms 38, PTO gears 39 and PTO shaft 40, and switch power
Transmission device is connected and disconnected from PTO shaft 40.PTO clutch mechanisms 38 include gear 38a, hydraulic pressure multiplate clutch C5 and biography
Moving axis 38b, and when hydraulic pressure multiplate clutch C5 is engaged, the PTO shaft 40 in PTO driving conditions is imparted power to, and
And the rotary power for passing to gear 38a from input shaft 14 by gear 41 is passed into transmission by hydraulic pressure multiplate clutch C5
Axle 38b.When hydraulic pressure multiplate clutch C5 unclamps, PTO clutch mechanisms 38 are disconnected in PTO non-driven states (neutral gear shape
State) PTO shaft 40 power transmission, and the transmission that will be passed to gear 38a rotary power to power transmission shaft 38b disconnects.
Pay attention to, as described below, tractor 1 is provided with gear pump 70, its by with gear 38a meshed gears 70a and gear
70a meshed gears 70b etc. drives.
PTO gears 39 include Hi (high speed) gear 39a, Lo (low speed) gears 39b, power transmission shaft 39c with
And switching device 39d, and according to switching device 39d position, change in the speed for passing to power transmission shaft 38b rotary power
Afterwards, the rotary power is passed into power transmission shaft 39c by Hi gear 39a or Lo gears 39b.
PTO shaft 40 is connected to the input shaft (not shown) of work machine by universal joint axle (not shown), by engine 4
Rotary power pass to work machine, and be arranged on the transverse center of machine body so that power passes through first gear
44th, second gear 45 etc. is transmitted.
Pay attention to, as shown in Figures 5 to 7, the gearbox 12 of present embodiment divides in the preceding speed change in the front of fore-and-aft direction
The case 12F and rear transmission gear box 12R at the rear of fore-and-aft direction.As shown in Figure 6 and Figure 7, in the front gear box 12F of present embodiment
In, the clutch valve 55 of hydraulic pressure multiplate clutch C1, C2 for controlling forward-reverse switching mechanism 15, for controlling Hi-Lo
Hydraulic pressure multiplate clutch C3, C4 of gear 16 clutch valve 56, the hydraulic pressure multi-disc for controlling PTO clutch mechanisms 38
The clutch valve of clutch C5 clutch valve 57, hydraulic pressure multiplate clutch C6, C7 for controlling 2WD/4WD switching mechanisms 19
64th, gear pump 70 etc. is separately positioned on right surface and left surface.Here, in front gear box 12F, as shown in fig. 6, clutch
On the surface on the right that valve 55, clutch valve 56 and clutch valve 64 are arranged on width.On the other hand, in front gear box
In 12F, as shown in fig. 7, on the surface on the left side that clutch valve 57 and gear pump 70 are arranged on width.As a result, dilatory
In machine 1, clutch valve 55,56,57,64, gear pump 70 etc. are efficiently arranged on front gear box 12F outer surface.
Now, gear pump 70 and its peripheral structure as hydraulic pump will be illustrated.When activated, gear pump 70, which is drawn, becomes
Hydraulic oil in fast case 12, and be respectively supplied to for the hydraulic circuit of raise/lower work machine and turned to for controlling
Hydraulic circuit, and as described above, gear pump 70 is arranged on a side surface of gearbox 12 (the front gear box 12F in figure)
On (left side in figure).More specifically, as described above, gear pump 70 by with gear 38a meshed gears 70a and gear
70a meshed gears 70b etc. is driven, and gear 70a and gear 70b is rotatably installed in by removable metal 69
On front gear box 12F side surface.In addition, the input shaft component 70c of gear pump 70 is engaged through for installing gear with sawtooth
70b quill shaft 70d, and the housing of gear pump can remove from metal 69.The upper surface of metal 69 is provided with rotation sensing
Device 68, it is used for the rotation for detecting the gear 70b as the input gear for driving gear pump 70.Receive the rotation of engine
Power, gear 70b is not rotated ordinatedly by any speed change gear with fixed gearratio, therefore detects the rotation with engine
Change into the rotation of ratio.Due to turn-sensitive device 68 by the installation component (such as metal 69) outside gearbox 12 come
Installation, therefore maintenance work (such as its adjustment and replacing) is easy.
On a rear transmission gear box 12R side surface, multiple (in figure be 2) suction filters 71,71 removedly with gear
Pump 70 is arranged on same side surface (being the left side in figure).Suction filter 71,71 includes the filter cylinder mistake being contained in cylindrical shell
Filter, and be mounted adjacent one another by adapter 72,72, to cause them to cover in gearbox 12R left-hand face
Opening.More specifically, rear transmission gear box 12R includes being used for the opening 73,73 for installing suction filter 71,71, opening 73,73 is provided with
The inner space of rear transmission gear box 12 is connected to opening 73,73 by through hole 74,74, through hole 74,74, to cause in rear transmission gear box 12R
Hydraulic oil flow into be arranged on opening 73,73 in suction filter 71,71 in.One end of adapter 72,72 is screwed into suction strainer
The center of device 71,71.Adapter 72,72 is hollow, and wherein their end connects with filter 71,71, and another
End is arranged on rear transmission gear box 12R, is connected with forming the oil suction path 75 in rear transmission gear box 12R corner.
Oil suction path 75 is provided with the preformed thickness portion of moulding by casting (castmolding) and formed therein
Through hole 75a.Oil suction path 75 is formed in the longitudinal direction, and including the adapter for installing two suction filters 71,71
72nd, 72 construction opening 75b, 75b, and suction filter 71,71 is arranged in construction opening 75b, 75b, while adapter 72,72
The other end all connected with oil suction path 75.Therefore, as described below, the hydraulic oil of through hole 74,74 is flowed into because of driving gear pump
And flowed into by suction, and through the hollow bulb of filtering cartridge filter and adapter 72,72 in oil suction path 75.
The outflow path that is connected with oil suction path 75 is formed parallel to rear transmission gear box 12R construction opening 75b, 75b
75c.Outflow path 75c is connected by intake line accessory 76 (such as flexible pipe and pipeline) with gear pump 70.Pay attention to, intake line
Accessory 76 includes block portion 77 in its terminal part, and it is removedly fixed by bolts on the upper surface of gear pump 70.
When oil suction occurs for the driving in response to gear pump 70, the hydraulic oil via through holes 74,74 in rear transmission gear box 12R flow into
In two suction filters 71,71, and the feelings of foreign matter etc. are filtered out when flowing through filtering cartridge filter from periphery in suction filter 71,71
Under condition, oil suction path 75 is flowed into by the hollow bulb of adapter 72,72.Then, the hydraulic oil in oil suction path 75 from outflow road
Flowed out in the 75c of footpath, and gear pump 70 is flowed into by intake line accessory 76 (such as flexible pipe and pipeline).
Pay attention to, the protrusion opening on the initiating terminal in oil suction path 75 is connected to the gearbox (shielded box in accompanying drawing
12S) front flange part and sealed.
Now, reference picture 5 and Figure 10, the protection structure of suction filter 71,71 will be illustrated.It is installed in parallel in rear transmission gear box 12R
On two suction filters 71,71 be arranged so that its side is covered by left rear wheel 3.Rear transmission gear box 12R lower surface is provided with
Attachment plate 78R, and shielded box 12S lower surface is provided with attachment plate 78S.More specifically, the attachment plate strengthened with U-shaped section
78R, 78S are connected to the lower surface of gearbox 12, and are fastened at 2 points with bolt.Moreover, the protection as protection component
Plate 79 is installed in the top for attachment plate 78R, 78S for being arranged on front and back.The following table for the suction filter 71,71 be arrangeding in parallel
Face is covered by protection board 79.Protection board 79 is flat board, and its rear portion is bent into can be with the rear transmission gear box 12R and shielded box of different height
12S is used together, while provides enhancement.Although this depends on the strength of materials, protection board 79 is preferably sufficiently thick to prevent
Its because with four scattered rubbles, the first-class collision of sand gravel and cobble gravelstone and caused by deform.
Using the structure, the side of suction filter 71,71 is protected by left rear wheel 3, and its lower surface is protected by protection board 79
Shield, therefore prevent and destroyed caused by the object collision scattered with other materials and four.
Figure 12 to Figure 15 shows the modified example of protection component, and the protection component is, for example, protection board.Shown in Figure 12
Structure includes the protection board 79 of minimum area, and its outward flange does not cover the outward flange of suction filter 71, and protection board 79 is arranged on
The periphery of suction filter 71 is sentenced so that it makes without prejudice to the filter spanner (not shown) for being attached/dismantling filter 71
With.More specifically, the outward flange of protection board 79 is short so that the circumference that can not cover suction filter 71, and suction filter 71 enough
Outward flange formed on the position of machine body side is returned to, while the band of filter spanner retracts length b in the position
Inside it is wound on the periphery of suction filter 71, so that the bar that must be used to ordinatedly operate the band can be in the situation of not interference protection plate 79
Under operated with circular motion.
In the structure that single protection board 79 covers the suction filter 71,71 for being set in parallel in the right and left, dirt is being protected
Aggregation on backplate 79 is inevitable.Therefore, the lower surface of the suction filter 71,71 of the right and left is set in parallel in for covering
Protection board 79 can be provided with rectangular aperture (figure below the gap at the center of its left and right directions, between suction filter 71,71
Or otch (Figure 14) 13).The 79a and otch 79b that is open reduces the aggregation of dirt.Pay attention to, Figure 15 protection component is shaft-like protection
Framework 80, it is arranged on the central lower of suction filter 71,71, for changing protection board 79.This structure is used to reduce to be dissipated by four
Dirt and with destruction caused by the collision of other objects, and compared with the structure of protection board 79, reduce cost and again
Amount, while its manufacture is easy.
Block portion 77 at the terminal part of intake line 76 is provided with oil temperature sensor 85 (Figure 11).Specifically, block
Portion 77 includes input path 77a, outgoing route 77b and narrow pass through openings 77c, wherein input path 77a sealing insertions
The terminal part of intake line 76 therein, outgoing route 77b set approximately perpendicular to input path 77a and connected with gear pump 70
It is logical, and narrow pass through openings 77c is formed at the connectivity points that their fuel feeding temperature sensors 85 are inserted and installed.Oil temperature senses
Device 85 is included in the narrow columnar part 85a of its end, the installation unit 85b and electric connection terminal 85c of major diameter, and
When hydraulic oil contacts with narrow columnar part 85a, resistance caused by because of the heat of the unshowned temperature-measuring element of influence
Value is detected, and the temperature of electricity output hydraulic oil.
As described herein, because oil temperature sensor 85 is arranged on the terminal being connected with gear pump 70 of intake line 76
At portion, therefore when the so-called hydraulic operation liquid for being used to control is sucked by gear pump 70 and is directed to actuator by control valve
When, the temperature for the hydraulic oil discharged from gear pump 70 is detected directly.Therefore, if gearbox also serves as hydraulic oil container,
Be difficult to by the oil temperature sensor 85 being arranged on gearbox detect and measure hydraulic control oil because with hydraulic pressure described here
Oil is directly detected, and is flowed into the temperature of the hydraulic control oil of intake line 76 and can be directly detected, and temperature is fitted
The structure that locality detects is compared, and its temperature is unlikely to be uniform.
Claims (4)
1. a kind of working truck, it includes：
Gearbox (12)；
Trailing wheel (3)；
Suction filter (71,71), its be removably disposed on the side surface of gearbox (12) and with trailing wheel (3) relatively, be used for
Filter the hydraulic oil flowed into from gearbox (12)；And
Component (79,80) is protected, it is used to prevent the lower surface of suction filter (71,71) from colliding with four scattered objects；Wherein
The outward flange of protection component (79,80) is short so that the end that can not cover suction filter (71,71) enough.
2. working truck according to claim 1, wherein, protection component is protection board (79)；At least two suction filters
(71,71) it is disposed adjacent to each other；And the protection board (79) for covering the lower surface for the suction filter (71,71) be arrangeding in parallel is being inhaled
Rectangular aperture or otch are provided with below gap between filter (71,71).
3. working truck according to claim 1, wherein, protection component is provided under the center of suction filter (71,71)
The shaft-like protect-ing frame structure (80) of side.
4. working truck according to any one of claim 1 to 3, it also includes：
Intake line accessory (76) and gear pump (70), they are arranged on the side surface of gearbox (12) and in suction filter
(71,71) before；And
Oil temperature sensor (85), it is arranged on intake line accessory (76)；Wherein
The oil stream filtered by driving gear pump (70) by suction filter (71,71) is crossed intake line accessory (76) and is used as
Hydraulic control oil.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016108658A JP6620676B2 (en) | 2016-05-31 | 2016-05-31 | Tractor |
| JP2016-108658 | 2016-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207028845U true CN207028845U (en) | 2018-02-23 |
Family
ID=60575139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720615592.7U Active CN207028845U (en) | 2016-05-31 | 2017-05-27 | Working truck |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6620676B2 (en) |
| CN (1) | CN207028845U (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5154329Y2 (en) * | 1973-01-27 | 1976-12-25 | ||
| JPS5346683Y2 (en) * | 1975-04-09 | 1978-11-08 | ||
| JPS5839320U (en) * | 1981-09-08 | 1983-03-15 | ヤンマーディーゼル株式会社 | Agricultural tractor hydraulic system |
| JPH0345304U (en) * | 1989-09-12 | 1991-04-26 | ||
| JP2011105134A (en) * | 2009-11-17 | 2011-06-02 | Mitsubishi Agricultural Machinery Co Ltd | Working vehicle |
| JP2013095191A (en) * | 2011-10-28 | 2013-05-20 | Iseki & Co Ltd | Working vehicle |
| JP2016159725A (en) * | 2015-02-27 | 2016-09-05 | 井関農機株式会社 | Work vehicle |
-
2016
- 2016-05-31 JP JP2016108658A patent/JP6620676B2/en not_active Expired - Fee Related
-
2017
- 2017-05-27 CN CN201720615592.7U patent/CN207028845U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP6620676B2 (en) | 2019-12-18 |
| JP2017213978A (en) | 2017-12-07 |
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